Is the natural root retained?
Yes. This approach uses an existing tooth root.
← All explanationsGlass fibre post
What is a glass fibre post used for in a tooth?
A glass fibre post can retain the core of a severely damaged root-filled tooth. It is secured in a suitable part of the root canal. It does not strengthen the root. Remaining tooth structure, loading and the planned final restoration are among the deciding factors.
For training & practice ↓
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Choose a view
Start with the remaining tooth
Not every root-filled tooth needs a post. First, the usable tooth structure available for the core and final restoration is assessed.
Retention for the core
The post helps anchor the core. As much dentine as possible should be preserved. The root should not be unnecessarily enlarged simply to fit a bigger post.
The whole restoration matters
The core, remaining tooth walls and final restoration work together. A post does not replace suitable surrounding natural tooth structure or reliably prevent fractures.
Read the full explanation
Start with the remaining tooth
Not every root-filled tooth needs a post. First, the usable tooth structure available for the core and final restoration is assessed.
Retention for the core
The post helps anchor the core. As much dentine as possible should be preserved. The root should not be unnecessarily enlarged simply to fit a bigger post.
The whole restoration matters
The core, remaining tooth walls and final restoration work together. A post does not replace suitable surrounding natural tooth structure or reliably prevent fractures.
Notes on the teaching images
- Tooth-section teaching model · not a patient case
- Principle illustration · not procedural instructions
- Structural overview · no durability promise
At a glance
What if the core becomes loose?
Avoid loading the tooth and contact the treating practice promptly.
What can I ask beforehand?
Why a post is needed and which final restoration is planned.
Knowledge in motion
Explained in 36 seconds.
Three steps. No audio.
Each scene can also be selected manually.
Silent educational film with German on-screen text and simplified teaching images. Not a patient case or a promised treatment outcome. The full English explanation is available as text.
Often confused
A root post is not an implant
A glass fibre post sits within an existing natural tooth root. An implant replaces a tooth root and is anchored in the jawbone.
Quick answers
Does a glass fibre post make the tooth stronger?
Its main purpose is to retain the core. It does not strengthen the root. The resilience of a restoration depends substantially on the remaining tooth and overall design.
Is glass fibre always better than metal?
No. The material name alone does not determine the best option for every tooth. Findings, design and fixation need to be considered together.
Does every root-filled tooth need a post?
No. When sufficient usable tooth structure remains, a core without a post may be possible. The appropriate restoration is decided for the individual tooth.
At the practice
For the appointment
You can bring this question to your appointment:
Why does this tooth need a post, and how much natural tissue can be preserved?
For a severely damaged tooth, discuss how much structure remains and how the core can be retained.
Discuss preserving a toothAppointment selection at DoctolibLearning layer for training & practiceUnderstand terminology and deepen knowledge
- Retention
- Holding or anchoring a core.
- Dentine
- The tissue beneath enamel and within the root.
- Ferrule
- Surrounding suitable tooth structure that a crown can encircle.
Make the distinction
Material choice alone does not determine prognosis. Remaining tissue, canal shape, fixation and loading matter together.
Sources and context
Editorial research: . General information, not an individual diagnosis or treatment recommendation. Teaching illustrations are simplified and do not depict a patient case.